A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5975-01-488-6518
NSN 5960-01-507-9112
NSN 6610-01-182-1182
NSN 5925-00-279-1353
NSN 2925-00-595-7525
NSN 6320-01-498-4954
NSN 5975-01-029-3974
NSN 5996-00-176-0999
NSN 6645-01-370-3818
NSN 5965-00-063-9558
NSN 5990-01-364-8405
NSN 6610-00-159-1110